Will barbiturates work like a truth serum?

Barbiturates have sedative effects and can lower inhibitions, which might lead individuals to speak more freely. However, they do not guarantee truthful responses, as the information shared can still be influenced by the individual's state of mind, memory, or desire to deceive. The concept of a "truth serum" is largely a myth, and the reliability of information obtained under the influence of barbiturates is questionable. Legal and ethical considerations also limit their use in interrogation settings.